I'm seeing some weird behavior in my environment (Debian testing with KDE 3.5) with Arora built against a recent Qt 4.5 + QtWebKit snaphot. A demo of the problem is here:
http://www.w3.org/2008/12/pre-test.html
An image of how that page renders in my environment is here:
http://www.w3.org/2008/12/pre-test.html.png
The specific problem is that he contents of a plain <pre> element don't get rendered in monospace (see the first paragraph). If I do <pre class="style="font-family: Courier, monospace">, it seems to show up on Courier as expected, but with italic and bold. However, if I do <pre class="style="font-family: Bitstream Vera Sans Mono, monospace">, it shows up correctly (monospace without any bold or italic).
I pinged Ben Meyer about this on #arora and he seemed to indicate that he didn't reckon this to be an Arora-specific bug (but instead I guess a QtWebKit bug), so I'm raising it here.